Disorder and Correlations in Novel Two-Dimensional Systems

9501160亚当斯实验被提出来研究两个非常不同的无序二维系统的输运性质。研究的第一个领域是通过施加平行磁场来驱动颗粒铝膜中的超导体-绝缘体（S-I）转变。这种技术，它避免了与磁通流阻相关的并发症，已被证明是非常有用的，在确定无序，约瑟夫森耦合，库仑阻塞的颗粒膜S-I转换的一般特性的相对作用。这些研究的最终目标是在颗粒系统中开发超导场效应晶体管。此外，研究无序和电子-电子相互作用的影响， 在 喷射到固体氢上的电子的传输特性正在形成。这是一个模型系统，从中可以获得更传统的无序半导体系统的输运性质的宝贵见解。 提出了两种非常不同的无序二维类型的材料的电性能的实验研究。研究的第一个领域涉及的机制在非常薄的铝膜的超导性的破坏。这项工作将试图确定无序，超导性和单一的相对作用。 电子 充电效果 的 通用 颗粒状铝膜在低温下的电学特性。 最终 目标 的 这些研究是 发展 的 一种使用粒状材料的超导场效应晶体管。 此外，正在研究无序和电子-电子相互作用对喷射到固体氢上的电子的电输运性质的影响。这种材料作为一种模型，从中人们可以获得更传统的半导体材料，如微电子工业中使用的材料的传输特性的有价值的见解。 ***

9501160 Adams Experiments are proposed to study the transport properties of two very different disordered two-dimensional systems. The first area of study is the superconductor-insulator (S-I) transition in granular aluminum films by the application of a parallel magnetic field to drive the transition. This technique, which avoids complications associated with flux flow resistance, has proven to be very useful in determining the relative roles of disorder, Josephson coupling, and Coulomb blockade in the generic characteristics of granular film S-I transitions. These studies are ultimately aimed at developing a superconducting field- effect transistor in a granular system. In addition, studies of the effects of disorder and electron-electron interactions in the transport properties of electrons sprayed onto solid hydrogen are being made. This is a model system from which one can obtain valuable insights into the transport properties of more conventional disordered semiconducting systems. %%% Experiments are proposed to study the electrical properties of two very different disordered two-dimensional types of material. The first area of study concerns the mechanisms involved in the destruction of superconductivity in very thin aluminum films. This work will attempt to determine the relative roles of disorder, superconductivity, and single electron charging effects in the generic electrical characteristics of granular aluminum films at low temperatures. The ultimate goal of these studies is the development of a superconducting field-effect transistor using granular materials. In addition, studies of the effects of disorder and electron-electron interactions in the electric transport properties of electrons sprayed onto solid hydrogen are being made. This material serves as a model from which one can obtain valuable insights into the transport properties of more conventional semic onducting materials, such as those used in the microelectronics industry. ***